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Crossover behavior in three-dimensional dilute spin systems

Calabrese, Pasquale and Parruccini, Pietro and Pelissetto, Andrea and Vicari, Ettore (2004) Crossover behavior in three-dimensional dilute spin systems. Physical review. E, Statistical, nonlinear, and soft matter physics, 69 . 036120. ISSN 1550-2376

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We study the crossover behaviors that can be observed in the high-temperature phase of three-dimensional dilute spin systems, using a field-theoretical approach. In particular, for randomly dilute Ising systems we consider the Gaussian-to-random and the pure-Ising-to-random crossover, determining the corresponding crossover functions for the magnetic susceptibility and the correlation length. Moreover, for the physically interesting cases of dilute Ising, XY, and Heisenberg systems, we estimate several universal ratios of scaling-correction amplitudes entering the high-temperature Wegner expansion of the magnetic susceptibility, of the correlation length, and of the zero-momentum quartic couplings.

Item Type: Article
Additional Information: Imported from arXiv
Subjects: Area02 - Scienze fisiche > FIS/02 - Fisica teorica, modelli e metodi matematici
Divisions: Dipartimenti (until 2012) > DIPARTIMENTO DI FISICA " E. FERMI"
Depositing User: dott.ssa Sandra Faita
Date Deposited: 09 Apr 2015 15:42
Last Modified: 09 Apr 2015 15:42
URI: http://eprints.adm.unipi.it/id/eprint/1798

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